04成功バッジのバウンスチェック

<main class="stage">
  <div class="fv4 is-demo">
    <span class="fv4__badge">
      <svg class="fv4__check" viewBox="0 0 24 24" width="22" height="22" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round">
        <polyline class="fv4__path" points="4,13 9,18 20,6" />
      </svg>
    </span>
    <span class="fv4__text">保存されました</span>
  </div>
</main>

@use "../../../../site/static/demo-tokens" as *;

// 성공 배지가 scale 로 바운스하며 나타나고, 그 안 체크는 stroke-dashoffset 로 그려진다
$duration: $dur-enter;
$easing: $ease-pop;
$color: $subject-mint;

@include stage($stage-paper);

.fv4 { display: flex; align-items: center; gap: $sp-3; width: min(220px, 86vw); }
.fv4__badge {
  position: relative; /* ::after 서지 링의 기준 — 위치·크기 불변 */
  width: 40px; height: 40px; border-radius: 50%;
  background: $color; display: grid; place-items: center; color: $subject-ink;
  opacity: 0; transform: scale(.4);
}
.fv4__path { stroke-dasharray: 24; stroke-dashoffset: 24; }
// 한 겹(감쇠 진동): 배지 등장 순간 rotate 감쇠 진동은 fv4-badge transform 안에 합성(scale 뒤에 rotate 를 얹는다)
.fv4__badge::after {
  content: ""; position: absolute; inset: -6px; border-radius: 50%;
  box-shadow: 0 0 0 4px rgba($color, .5); opacity: 0; transform: scale(.8); pointer-events: none;
}
.fv4__text { font-weight: 600; font-size: 14px; line-height: 1; font-family: inherit; color: $subject-blue; opacity: 0; transform: translateY(4px); }

@keyframes fv4-badge {
  0%, 10% { opacity: 0; transform: scale(.4) rotate(0deg); }
  20% { transform: scale(.86) rotate(8deg); }
  27% { transform: scale(1.02) rotate(-5deg); }
  33% { transform: scale(1.1) rotate(3deg); }
  39% { transform: scale(1.04) rotate(-1deg); }
  43% { transform: scale(1.06) rotate(0deg); }
  48% { transform: scale(1); }
  85%, 100% { opacity: 1; transform: scale(1); }
}
@keyframes fv4-surge {
  0%, 30% { opacity: 0; transform: scale(.8); }
  38% { opacity: .55; transform: scale(1.18); }
  50% { opacity: .12; transform: scale(1.32); }
  60% { opacity: .22; transform: scale(1.42); }
  72% { opacity: 0; transform: scale(1.48); }
  100% { opacity: 0; transform: scale(1.48); }
}
@keyframes fv4-draw { 0%, 30% { stroke-dashoffset: 24; } 55%, 100% { stroke-dashoffset: 0; } }
@keyframes fv4-text { 0%, 30% { opacity: 0; transform: translateY(4px); } 55%, 100% { opacity: 1; transform: translateY(0); } }

.fv4.is-demo .fv4__badge { animation: fv4-badge $duration $easing infinite; }
.fv4.is-demo .fv4__badge::after { animation: fv4-surge $duration $easing infinite; }
.fv4.is-demo .fv4__path { animation: fv4-draw $duration linear infinite; }
.fv4.is-demo .fv4__text { animation: fv4-text $duration $easing infinite; }

@media (prefers-reduced-motion: reduce) {
  .fv4.is-demo .fv4__badge,
  .fv4.is-demo .fv4__badge::after,
  .fv4.is-demo .fv4__path,
  .fv4.is-demo .fv4__text { animation: none !important; }
  .fv4.is-demo .fv4__badge { opacity: 1; transform: scale(1); }
  .fv4.is-demo .fv4__badge::after { opacity: 0; }
  .fv4.is-demo .fv4__path { stroke-dashoffset: 0; }
  .fv4.is-demo .fv4__text { opacity: 1; transform: translateY(0); }
}

@charset "UTF-8";
html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ffffff;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.fv4 {
  display: flex;
  align-items: center;
  gap: 12px;
  width: min(220px, 86vw);
}

.fv4__badge {
  position: relative; /* ::after 서지 링의 기준 — 위치·크기 불변 */
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #4cd4a6;
  display: grid;
  place-items: center;
  color: #17141a;
  opacity: 0;
  transform: scale(0.4);
}

.fv4__path {
  stroke-dasharray: 24;
  stroke-dashoffset: 24;
}

.fv4__badge::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(76, 212, 166, 0.5);
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
}

.fv4__text {
  font-weight: 600;
  font-size: 14px;
  line-height: 1;
  font-family: inherit;
  color: #2f6df6;
  opacity: 0;
  transform: translateY(4px);
}

@keyframes fv4-badge {
  0%, 10% {
    opacity: 0;
    transform: scale(0.4) rotate(0deg);
  }
  20% {
    transform: scale(0.86) rotate(8deg);
  }
  27% {
    transform: scale(1.02) rotate(-5deg);
  }
  33% {
    transform: scale(1.1) rotate(3deg);
  }
  39% {
    transform: scale(1.04) rotate(-1deg);
  }
  43% {
    transform: scale(1.06) rotate(0deg);
  }
  48% {
    transform: scale(1);
  }
  85%, 100% {
    opacity: 1;
    transform: scale(1);
  }
}
@keyframes fv4-surge {
  0%, 30% {
    opacity: 0;
    transform: scale(0.8);
  }
  38% {
    opacity: 0.55;
    transform: scale(1.18);
  }
  50% {
    opacity: 0.12;
    transform: scale(1.32);
  }
  60% {
    opacity: 0.22;
    transform: scale(1.42);
  }
  72% {
    opacity: 0;
    transform: scale(1.48);
  }
  100% {
    opacity: 0;
    transform: scale(1.48);
  }
}
@keyframes fv4-draw {
  0%, 30% {
    stroke-dashoffset: 24;
  }
  55%, 100% {
    stroke-dashoffset: 0;
  }
}
@keyframes fv4-text {
  0%, 30% {
    opacity: 0;
    transform: translateY(4px);
  }
  55%, 100% {
    opacity: 1;
    transform: translateY(0);
  }
}
.fv4.is-demo .fv4__badge {
  animation: fv4-badge 600ms cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

.fv4.is-demo .fv4__badge::after {
  animation: fv4-surge 600ms cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

.fv4.is-demo .fv4__path {
  animation: fv4-draw 600ms linear infinite;
}

.fv4.is-demo .fv4__text {
  animation: fv4-text 600ms cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@media (prefers-reduced-motion: reduce) {
  .fv4.is-demo .fv4__badge,
  .fv4.is-demo .fv4__badge::after,
  .fv4.is-demo .fv4__path,
  .fv4.is-demo .fv4__text {
    animation: none !important;
  }
  .fv4.is-demo .fv4__badge {
    opacity: 1;
    transform: scale(1);
  }
  .fv4.is-demo .fv4__badge::after {
    opacity: 0;
  }
  .fv4.is-demo .fv4__path {
    stroke-dashoffset: 0;
  }
  .fv4.is-demo .fv4__text {
    opacity: 1;
    transform: translateY(0);
  }
}

import type { CSSProperties } from "react";
import styles from "./SuccessBounceCheck.module.scss";

export type SuccessBounceCheckProps = { duration?: number; easing?: string; color?: string };
type Vars = CSSProperties & { "--duration"?: string; "--easing"?: string; "--color"?: string };

export default function SuccessBounceCheck({ duration = 600, easing = "cubic-bezier(.2,1.4,.4,1)", color = "#4cd4a6" }: SuccessBounceCheckProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <div className={styles.fv4} style={vars}>
      <span className={styles.badge}>
        <svg viewBox="0 0 24 24" width="22" height="22" fill="none" stroke="currentColor" strokeWidth={3} strokeLinecap="round" strokeLinejoin="round">
          <polyline className={styles.path} points="4,13 9,18 20,6" />
        </svg>
      </span>
      <span className={styles.text}>저장됐어요</span>
    </div>
  );
}